One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,8,15,31)(4,17,21,43)(5,22)(6,12)(7,11)(9,20,33,47)(10,26)(13,37)(14,29,23,50)(16,30,27,36)(18,41)(19,46,49,42)(24,35)(25,52)(28,45)(32,58,51,48)(34,54)(38,60)(39,56)(40,57,53,59)(44,62)(55,63)(61,64)(1,3)(2,8,11,31)(4,18)(5,23,26,14)(6,27)(7,15)(9,28,33,56)(10,29)(12,36,35,30)(13,21)(16,24)(17,41,43,37)(19,38,49,44)(20,39)(22,50)(25,40,54,53)(32,55)(34,59)(42,62)(45,47)(46,60)(48,63,58,61)(51,64)(52,57)(1,4)(2,9,11,33)(3,13,15,18)(5,19)(6,20)(7,21)(8,28)(10,32,22,51)(12,17,35,43)(14,38,23,44)(16,39,27,45)(24,47)(25,48)(26,49)(29,55)(30,37)(31,56)(34,42,52,46)(36,41)(40,61,53,63)(50,64)(54,58)(57,60)(59,62)(1,5,24,54,7,26,6,25)(2,10,12,34,11,22,35,52)(3,14,16,40,15,23,27,53)(4,19,47,58,21,49,20,48)(8,29,36,59,31,50,30,57)(9,32,17,42,33,51,43,46)(13,38,39,61,18,44,45,63)(28,55,41,62,56,64,37,60)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.